Scandium

Email: molly@samaterials.com

Tel : (949) 407-8904

Cascandite Mineral Data

cascandite-mineral
General Information
Chemical Formula:Ca(Sc,Fe++)Si3O8(OH)
 
Classification
Dana Class:65.2.1.6(65)Single-Width Unbranched Chains,(65.2)with chains (65.2.1)Wollastonite group
Strunz Class:VIII/F.18-50 – Silicates [Inosilicates (chain and band) Triplet chains [Si3O9]6- (Wollastonite-2M – Foshagite series)]
 
Crystallography
Axial Ratios:a:b:c =0.9396:1:0.679
Cell Dimensions:a = 9.791, b = 10.42, c = 7.076, Z = 4; alpha = 98.91ø, beta = 102.63ø, gamma = 84.17ø V = 692.34
Crystal System:Triclinic – Pinacoidal H-M Symbol ( -1) Space Group: C1-
X Ray Diffraction:By Intensity(I/Io): 2.821(1) 3.62(0.75) 3.1(0.65)
 
Physical Properties
Cleavage:[100] Good, [001] Good
Color:light pink.
Density:3.01
Diaphaniety:Transparent
Hardness:4.5-5.5
Luster:Vitreous (Glassy)
Streak:white
 
Optical Properties
Optical Data:Biaxial (?), a=1.663, g=1.684, bire=0.0210
 
Other Information
References:PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Leave a Reply

Your email address will not be published. Required fields are marked *